Flatspot

[Focus2.0Zetec]

Hi

My 2.0 Focus has seemed down on power for a while so last week i tried a tank of Shell VPower, although this has resulted in a small improvement it has highlighted a very noticable flatspot between 3000 and 3200 rpm.

Has anyone else had any experience of this or does anyone know what could be causing this. (Car is only 3 months out of manufacturers warrenty, typical!)

Regards

Chris

[mds automotive]

sounds like the air mass meter take it off and spray some intake cleaner through it the unit also houses the intake air temp sensor you can check this with a voltmeter , with the ignition on the voltage accross the first and last pins of the multiplug ( still connected ) should be approx 3.1 v at 20C . spark plugs should be changed at 38k with a gap of 1mm